CeylonNavigatorOpenActionProvider.java

package com.redhat.ceylon.eclipse.code.navigator;

import org.eclipse.jdt.internal.ui.navigator.OpenAndExpand;
import org.eclipse.jdt.ui.actions.OpenAction;
import org.eclipse.jface.action.IAction;
import org.eclipse.jface.action.IMenuManager;
import org.eclipse.jface.viewers.TreeViewer;
import org.eclipse.ui.IActionBars;
import org.eclipse.ui.IViewPart;
import org.eclipse.ui.actions.ActionContext;
import org.eclipse.ui.navigator.CommonActionProvider;
import org.eclipse.ui.navigator.ICommonActionConstants;
import org.eclipse.ui.navigator.ICommonActionExtensionSite;
import org.eclipse.ui.navigator.ICommonViewerWorkbenchSite;

public class CeylonNavigatorOpenActionProvider extends
        CommonActionProvider {

    private IAction fOpenAndExpand;
    private OpenEditorActionGroup fOpenGroup;

    private boolean fInViewPart = false;

    @Override
    public void fillActionBars(IActionBars actionBars) {
        if (fInViewPart) {
            fOpenGroup.fillActionBars(actionBars);

            if (fOpenAndExpand == null && fOpenGroup.getOpenAction().isEnabled()) // TODO: is not updated!
                actionBars.setGlobalActionHandler(ICommonActionConstants.OPEN, fOpenGroup.getOpenAction());
            else if (fOpenAndExpand != null && fOpenAndExpand.isEnabled())
                actionBars.setGlobalActionHandler(ICommonActionConstants.OPEN, fOpenAndExpand);
        }

    }

    @Override
    public void fillContextMenu(IMenuManager menu) {

        if (fInViewPart) {
            if (fOpenGroup.getOpenAction().isEnabled()) {
                fOpenGroup.fillContextMenu(menu);
            }
        }
    }

    @Override
    public void init(ICommonActionExtensionSite site) {

        ICommonViewerWorkbenchSite workbenchSite = null;
        if (site.getViewSite() instanceof ICommonViewerWorkbenchSite)
            workbenchSite = (ICommonViewerWorkbenchSite) site.getViewSite();

        if (workbenchSite != null) {
            if (workbenchSite.getPart() != null && workbenchSite.getPart() instanceof IViewPart) {
                IViewPart viewPart = (IViewPart) workbenchSite.getPart();

                fOpenGroup = new OpenEditorActionGroup(viewPart);

                if (site.getStructuredViewer() instanceof TreeViewer)
                    fOpenAndExpand = new OpenAndExpand(workbenchSite.getSite(), (OpenAction) fOpenGroup.getOpenAction(), (TreeViewer) site.getStructuredViewer());
                fInViewPart = true;
            }
        }
    }

    @Override
    public void setContext(ActionContext context) {
        super.setContext(context);
        if (fInViewPart) {
            fOpenGroup.setContext(context);
        }
    }

    /*
     * @see org.eclipse.ui.actions.ActionGroup#dispose()
     * @since 3.5
     */
    @Override
    public void dispose() {
        if (fOpenGroup != null)
            fOpenGroup.dispose();
        super.dispose();
    }

}